Elevator



(No Model.)

T. GRISPIN.

ELEVATOR. No. 354,854. Patented Deo. 21,18

UNITED STATES PATENT OFFICE.

rrHoMAsoEIsPIIv, or DETROIT, MICHIGAN.

ELEvAToR.

SPECIFICATION forming part of Letters Patent No.354,854, dated December 21, 1886.

Application filed March 6, 1886. Serial No. 194,246. (No model.) I

To all whom it may concern:

Be it known that I, THOMAS CRISPIN, of Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Elevators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings,which form part of this specification.

My invention relates to an improvement in elevators; and it consists Ain the combination of the elevator, suitable guides between'which it moves, guidepulleys at each end of the guides, the cables which are connected to the top of the elevator and pass up over the upper pulleys, the racks, which are formed of a nu mber of sections, which are coupled together, and which are connected at one end to the under side of the carriage and at the other to the cables, and the operating mechanism for moving these racks and the carriage, as will be more fully described hereinafter.

rlhe object of my invention is to make the vracks in a number of separate and distinct pieces, which are loosely connected together, so that they will pass around the guiding-pulleys at the lower ends of the guides and move as though they were a part of the cables, in

AAcontradistinction to the fixed racks, which are attached to the sides of the guiding-timbers.

Figure 1 is a side elevation of an elevator embodying myinvention. Fi g. 2 is a detached view of the elevating mechanism. Fig. 3 is a detached view of the racks. Fig. 4. is a perspective of a section of the ilexible rack. Fig. 5 is a perspective of a portion of the operating parts. Fig. 6 is a vertical section of an elevator embodying my invention, taken through the center of Fig. l.

A represents the two vertical guides, between which the elevator B moves, and which guides are grooved upon their inner sides, so as to receive the racks C. 'Io the upper portion of the elevator are secured the two cables D, which pass up over the guiding-pulleys G, and which are connected at their opposite ends to the racks C. Connected to the under side of the elevator B are the racks C, which consist of a number of pieces which are loosely connected together, and which pass down around the angular pulleys E and up the outer sides of the guides A, so as to make connecrections while gearing with the racks C. The

racks C being formed of a number of pieces or castings provided with two or more teeth, and which castings are iiexibly connected together, the racks move freely around the guiding-pulleys E, according to the direction in which the wheels H are being made to revolve. As the flexible racks form practicabl y parts of the cables D, it is onlypnecessary to start the wheels H into operation, when the carriage B will be either raised or lowered. These racks being flexible and made to move with the carriage, a much simpler and cheaper mechanism can be used than where theracks are secured solidly to the inner sides of the guides A, in the usual manner.

Having thus described my invention, I claim-- 1,. In an elevator, the combination, with the carriage, of the cables, which are attached to it and pass around suitable guiding-pulleys, with the ilexible racks, which are also attached to the carriage and pass around suitable pulleys and are connected to the cables, substantially as shown.

2. The 'combination of the grooved guides A, the carriage B, the flexible racks C, angu lar guiding-pulleys E, cables D, pulleys G, and the driving mechanism, substantially as shown and described.

-rrHoMAs oEIsPIN.

Witnesses:

DESIRE B. WILLEMIN,l WM. V. SYLEM. 

